How to use usbhs + usbfs with stm32h743zit and azrtosh7 3.3.0

[EBrun]

On an existing, working project developed with stm32cubeide 1.19.0 and the stm32h743zit developed with azrtosh7 3.3.0 that uses usbhs as the host for msc and midi devices, I need to add usbfs channel management to connect hid and midi, but I'm having significant problems configuring the system with stm32cubemx. I haven't found any examples online that support both USB channels. Has anyone tried using both USB channels and can give me some advice? During testing, I found that creating code from stm32cubemx 6.15.0 with both USB channels has many problems. I had to make some manual changes to the code created because it starts running, but only partially works.

[FBL]

Hi @EBrun 

You can use CubeMX with X-CUBE-AZRTOS-H7 to generate the necessary libraries once and then proceed with manual integration. However, there are no official examples or documentation for dual USB (USBHS + USBFS) with Azure RTOS on STM32H7, so manual adaptation is required if you pursue this configuration. Certainly examples here will help you get started/ 

[EBrun]

Thanks for your reply.

Your news isn't very encouraging. The path you indicated is what I took to get to this point. From my tests, it seems that the USBX stack wasn't designed for dual functions at the same time. To get something running, I made some changes to the "ux_system_initialize.c" file because the "_ux_system_initialize(...)" function is called twice, once for the usbhs port and the second for the usbfs port. I could continue to manually modify the following steps, but I'd lose the code when I recreate the sources from cubemx.